更多"The phrase 'token economies' ( Para"的相关试题:
[单项选择]The phrase "the individuals" in Line 10, Para. 3 refers to _________.
A. students who practice cheating
B. parents who put pressure on their children
C. school administrators who approve of short-answer tests
D. teachers who are too hesitant to take actions against cheating
[单项选择]The phrase "be brought forward" in Line 3 most probably means _________.
A. be advanced
B. be completed
C. be expected
D. he introduced
[单项选择]The phrase "balance of nature" in the first line means ______.
A. reducing the population of.predators and parasites
B. keeping the right number of animals for the right amount of food
C. keeping the ratio of small game to predators
D. driving animals to mass migrations
[单项选择]The phrase "such powerful effects" in Line 3 of Paragraph 3 refers to ______.
A. the fact that many people cannot sleep and wake refreshed
B. the fact that the brain puts us to sleep when we are worn out
C. your sight, hearing, and attention are slow to alert you to dangers
D. increased risk of health problems or a serious, even deadly accident
[单项选择]The phrase "catch on"(Line 1,Para.3) most probably means ______.
A. interfere
B. prevail
C. perceive
D. continue
[单项选择]The phrase "catch on" (Line 1, Para. 3) most probably means______.
A. interfere
B. prevail
C. perceive
D. continue
[单项选择]The phrase "this relationship"( in Line 3, Para. 5 )refers to the connection between ______and the incidence of heart disease.
A. the amount of fish eaten
B. regular fish-eating
C. the kind of fish eaten
D. people of different regions
[单项选择]The phrase "come in handy" ( line 4, para. 2 ) probably means ______.
A. be useful when needed
B. be written by hand
C. be held in hand
D. be easy to carry
[单项选择]Token Ring Token Bus的“令牌”是一种特殊结构的
A. 控制帧
B. LLC帧
C. 数据报
D. 无编号帧
[单项选择]在以下关于CSMM/CD与Token Bus、Token Ring比较中， (23) 是错误的。
A. CSMA/CD是一种随机竞争总线的方法，它适用于办公自动化与对数据传输实时性要求严格的应用环境
B. CSMA/CD介质访问控制方法算法简单，易于实现。Token Bus与Token Ring需要复杂的环维护功能，实现较困难
C. Token Bus或Token Ring是一种确定型的方法，它适用于对数据传输实时性要求较高的应用环境，如生产过程控制领域
D. CSMA/CD在网络通信负荷大时，网络吞吐率下降、传输延迟增加
[单项选择]Token Ring和Token Bus的“令牌”是一种特殊结构的、______。
A. 控制帧
B. LLC
C. 数据报
D. 无编号帧
[单项选择]在Token Bus与Token Ring的讨论中，以下 (21) 是环维护工作需要完成的任务。
Ⅰ．环初始化 Ⅱ．用户使用权限
Ⅲ．新结点加入与撤出环 Ⅳ．优先级
Ⅴ．操作系统版本更新
A. Ⅰ、Ⅱ、Ⅲ
B. Ⅰ、Ⅱ、Ⅴ
C. Ⅰ、Ⅱ、Ⅳ
D. Ⅱ、Ⅴ
[单项选择]Token Ring和Token Bus的“令牌”是一种具有特殊结构的______。
A. 控制帧
B. LLC
C. 数据报
D. 无编号帧
[单项选择]在Token Bus与Token Ring的讨论中，以下哪些是环维护工作需要完成的任务
Ⅰ．环初始化 Ⅱ．用户使用权限
Ⅲ．新结点加入与撤出环 Ⅳ．优先级
Ⅴ．操作系统版本更新
A. Ⅰ、Ⅱ、Ⅲ
B. Ⅰ、Ⅲ、Ⅴ
C. Ⅰ、Ⅱ、Ⅳ
D. Ⅱ、Ⅴ
[单项选择]Economies, several courses of which I have taken thus far, （） to be difficult but useful for almost all students.
A. prove
B. proves
C. have been proved
D. are proved
[单项选择]The underlined phrase NORTHERN INVADERS in Par
A. A．1 probably refers to ______. the Canadians living in the north of AmericaB. the British invadersC. the YanksD. unknown
[单项选择]In developed economies, service industries______.
A. tend to employ an increasing number of people
B. cause problems for the white-collar unions
C. employ more people than manufacturing industries do
D. try to reduce their employees and to combat rising costs
[单项选择]Democratic government is a phrase that is notoriously hard to ______.
A. credit
B. defy
C. modify
D. define
